8.1. SR 09-17-2012 - Laserfiche WebLink

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Aug 24 12 02:11 p 763-241-1266 p.3 .Page 3 Then in: 8.1.2.4—The fire barrier shall be permitted to be a 1 hour with_hours fire protection opening and closing where the question of Class IIIA solvent in the machine and storage to not exceed 330 gallons and provide any one of the safety controls. (3)Features that limit solvent vapors to less than 23 percent ofLEL. 8.1.2.6—Automatic sprinklers shall not be required in drycleaning plants where the quantity of liquid does not extend 330 gallons and any one of the safety conditions. (3)Features that limit solvent vapors to less than 25 percent of LEL. 81.3.3—Electrical equipment and wiring shall be in accordance with National Electrical Code (NEC)for ordinary locations where the equipment contains instrumentation and controls by any one of the following: (3)Features that limit solvent vapors to less than 25 percent of LEL. 8.1.16—Automatic extinguishing system and self closing hatches shall not be required if the equipment contains instrumentation,equipment or controls that independently provide one of the following: (3).Features that limit solvent vapors to less than 25 percent of LEL. As previously stated here within,the difference between code standards of IFC and NFPA can be found in the prescriptive base and performance base methods as to how hazards are addressed. The committee of NPFA 32 spent a considerable amount of time over the past 10 years,updating its' standard to meet the current level of technology within today's drycleaning industry. Today's drycleaning industry is faced with strict rules and regulations regarding air emissions and ground containment of its Class IV solvent,known as perehloroethylene. More then 50%of the industry has already moved from using the non-combustible Class IV solvent to the environmentally friendly Class IIIA. Manufacturers also have made enormous strides in eliminating emissions and spillage of any solvent,regardless of the solvent they are designed to use. In the Class III solvent,manufacturers have incorporated known and sound technologies of safety controls to prevent combustion of these solvents. And since the equipment does not emit vapor or liquids,the need to store solvent inside a building is no longer required. Once a TL HCS 1PURA machine is placed into use, and filled with its liquid, a shop operator will typically not have to add solvent to it for up to a year. Normally solvent is added to an operating system once or twice a year,at no more than 1 to 2 gallons. Naturally this depends on how busy the individual shop is. Solvent within the machine is protected and does not emit to the atmosphere_ Solvent delivery is provided by the solvent manufacturer in metal containers with a capacity of 5 gallons.